Analisis Kemampuan Berpikir Kreatif Matematis Calon Guru Matematika

Tulisan ini membahas kemampuan berpikir  mahasiswa dalam menyelesaikan soal matematika berkategori soal berpikir kreatif matematis. Penelitian ini dilakukan dengan pendekatan penilitian deskriptif. Subjek penelitian adalah mahasiswa prodi tadris matematika STAIN Gajah Putih Takengon yang berjumlah 13 orang TA 2018/2019. Instrumen penelitian yang digunakan adalah soal tes berpikir kreatif matematis. Analisis data menggunakan The torrance tests of creative thinking (TTCT) yang terdiri dari tiga komponen yaitu kefasihan (fluency), fleksibelitas(flexibility), dan kebaharuan (novelty). Hasil penelitian disimpulkkan bahwa 1). Kemampuan berpikir kreatif mahasiswa masih sangat rendah dengan skor rata-rata2,61 (berada pada level kurang kreatif. 2) komponen berpikir kreatif yang paling rendah adalah fleksibelitas dan kebaharuan

Urgensi Penggunaan Model E-business Untuk Meningkatkan Teaching Learning Process Pada Program Studi Pendidikan Agama Islam

Perkembangan pendidikan seiring dengan perkembangan dibidang teknologi dapat bersinergi dengan perkembangan teknologi informasi. Pendekatan yang dapat dilakukan dapat menggunakan model e-business, dimana  e-business bukan sekedar sebuah bisnis  dapat beroperasi namun harus berhubungan dengan banyak bagian berbeda dari informasi mengenai pemasok, pelanggan, karyawan, tagihan, dan pembayaran. Dan tentu saja produk dan jasa mereka. Pemanfaatan model e-business pada dunia pendidikan akan menghasilkan e-education. Pada Prodi PAI agar pemanfaatan ini dapat maksimal dibutuhkan beberapa  penunjang seperti raw input, instrumental input, environment input yang dapat mempengaruhi teaching learning process. Tetapi proses ini mengalami kendala seperti sulitnya menemukan solusi dalam pemecahan masalah dalam bidang pengetahuan komputer dan kurangnya informasi tentang perkembangan di bidang pengetahuan komputer. Oleh karena itu, perlu adanya sistem sarana pembelajaran e-education yang berbasis multimedia agar dapat membantu mahasiswa untuk menyelesaikan masalah tersebut, serta untuk mempersiapkan mahasiswa, baik pendidik, maupun masyarakat pada umumnya untuk mengenal, memahami, dan memanfaatkannya guna meningkatkan wawasan dan pengetahuan dalam bidang komputer

Hydrophobicity properties of graphite and reduced graphene oxide of the polysulfone (PSf) mixed matrix membrane

Hydrophobicity properties of graphite and reduced graphene oxide (rGO) (from exfoliated graphite/rGO) towards PSf polymer membrane characteristic and properties at different additives weight concentrations (1, 2, 3, 4 and 5 wt. %) were investigated. Both PSF/graphite and PSf/rGO membranes were characterized in term of hydrophobicity, surface bonding, surface roughness and porosity. FTIR peaks revealed that membrane with graphite and reduced graphene oxide nearly diminished their O-H bonding which was opposite to the graphene oxide peak that shows a strong O-H bonding as increased exfoliated times. These results were in line with the contact angle results that showed strong hydrophobicity of graphite and reduced graphene oxide membranes as increased these additives concentration. The effect of strong hydrophobicity in these membranes also has resulted in smoother surface roughness compared to pristine PSf membrane. Further investigation of the performance of water flux also proved that both above membranes have strong hydrophobic effect, with the lowest pure water flux rate (L/m2h) was given by PSf/rGO 3% membrane at 19.2437 L/m2h

Effect of 28-homobrassinolide on the nitrate reductase, carbonic anhydrase activities and net photosynthetic rate in Vigna radiata

The foliage of fifteen day-old Vigna radiata seedlings was sprayed with water (control) or with a 10–10 M, 10–8Mor 10–6 Maqueous solution of 28-homobrassinolide (HBR). Samples of the treated plant material, collected at 30/50 days after sowing (DAS), were assessed for the activities of carbonic anhydrase (CA) and nitrate reductase (NR); leaf chlorophyll content (Chl); stomatal conductance (gs); carboxylation efficiency (CE), and net photosynthetic rate (PN). 28-homobrassinolide generated a significant impact on all these characteristics and on seed yield at harvest. Among the treatments, 10–8Mproved best, in which case the values for the above six physiological parameters in 30 days-old plants increased by, respectively, 31, 29, 27, 28, 29 and 33% over the control. Moreover, the harvest weight of the seeds of these plants was 27% larger than in the control

Prinsip Dasar Pengambilan Gambar dalam Kamera

Setiap bisa berkarya untuk membuat film video, asalkan tahu dan paham proses pembuatannya dan cara-cara penggunaan peralatannya. Asalkan ada kemauan dan peralatan, tidak susah untuk mempelajarinya. Apalagi saat ini kamera video sudah bukan barang asing lagi.Dalam lingkup keluarga pun sudah dikenal handycam, peralatan sederhana yang sudah dipenuhi beberapa fasilitas. Pertama kali yang perlu kita ketahui untuk pengambilan gambar adalah pengenalanterhadap kamera video, kamera video merupakansalah satu bagian penting dalam sebuah pengambilan gambar.Tanpa menyepelekan bagian lain, tanpa kamera sebuah produksi tidak bisa berjalan, karena di kamera video inilah gambar dan suara direkam ke dalam film atau vita video.  Dan selanjutnya akan diedit dikomputer dengan software editing

Stability assessment of earth retaining structures under static and seismic conditions

© 2019 by the authors. An accurate estimation of static and seismic earth pressures is extremely important in geotechnical design. The conventional Coulomb's approach and Mononobe-Okabe's approach have been widely used in engineering practice. However, the latter approach provides the linear distribution of seismic earth pressure behind a retaining wall in an approximate way. Therefore, the pseudo-dynamic method can be used to compute the distribution of seismic active earth pressure in a more realistic manner. The effect of wall and soil inertia must be considered for the design of a retaining wall under seismic conditions. The method proposed considers the propagation of shear and primary waves through the backfill soil and the retaining wall due to seismic excitation. The crude estimate of finding the approximate seismic acceleration makes the pseudo-static approach often unreliable to adopt in the stability assessment of retaining walls. The predictions of the active earth pressure using Coulomb theory are not consistent with the laboratory results to the development of arching in the backfill soil. A new method is proposed to compute the active earth pressure acting on the backface of a rigid retaining wall undergoing horizontal translation. The predictions of the proposed method are verified against results of laboratory tests as well as the results from other methods proposed in the past

Pemodelan Stokastik Curah Hujan Dari Beberapa Stasiun Curah Hujan Wilayah Tanggamus

This research is to study the periodic and stochastic models in the series of daily rainfall data. The study was conducted using daily rainfall data with a data length of 25 years (1977-2001) from the station of Banjar Agung, Gisting and Gunung Batu. This research used secondary rainfall data from Tanggamus, This study change the series of daily rainfall data into the sepektrum rainfall using FFT (Fast Fourier Transform). Periodicity of daily rainfall data were presented by using 512 rainfall. Stochastic series of rainfall data are assumed as the difference (error) between the rainfall data with periodic rainfall model. Results of this study is the correlation coefficient from three rainfall stations In this study, the correlation coefficient (R) between the data and the periodic model is 0,9974, between stochastic data series and stochastic models is 0,9996, and between data and periodic stochastic models is 0,99997. From these results it can be concluded that the periodic stochastic models of rainfall from Tanggamus periodic models using 512 rainfall data, the approach provides a very significant

Neutrino oscillation probabilities: Sensitivity to parameters

We study in detail the sensitivity of neutrino oscillation probabilities to the fundamental neutrino parameters and their possible determination through experiments. The first part of the paper is devoted to the broad theme of isolating regions in the neutrino (and anti-neutrino) energy and propagation length that are sensitive to the oscillation parameters. Such a study is relevant to neutrinos both from the Earth's atmosphere or from a neutrino factory. For completeness we discuss the sensitivity, however small, to the parameters involved in a three-generation framework, and to the Earth matter density profile. We then study processes relevant to atmospheric neutrinos which are sensitive to and allow precision measurements of the mixing angle theta_23 and mass-squared difference delta_32 apart from the mixing angle theta_13. Crucial to this analysis is charge identification; detectors having this capability can isolate these matter effects. In particular, we address the issue of using matter effects to determine whether the mixing angle theta_23 is maximal, and, if not, to explore how well its octant can be determined. When realistic detector resolutions are included, we find that deviations of about 15% (20%) from a maximal value of sin^2 theta_23=1/2 can be measured at 95% (99%) CL provided theta_13 is non-zero, sin^2 theta_13 >= 0.015, and the neutrino mass ordering is normal, with fairly large exposures of 1000 kton-years.Comment: 37 pages Latex file, 30 eps figure files; minor typos fixe